Get all the cancelled labels.
End date and time of the record created (format YYYY-MM-DDTHH:MM:SSZ or YYYY-MM-DDTHH:MM:SS+00:00, default: NOW())
Start date and time of the record created (format YYYY-MM-DDTHH:MM:SSZ or YYYY-MM-DDTHH:MM:SS+00:00, default: 24hrs ago)
Number of records per page
Next token
Shipper account ID
Cancel Label status
Content-Type